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A novel femtosecond-laser formation of CdS nanocrystallites in zirconia matrices

Raulin, Katarzyna and Cristini-Robbe, Odile and Baldeck, Patrice and Stephan, Olivier and Kinowski, Christophe and Turrell, Sylvia and Capoen, Bruno and Bouazaoui, Mohamed (2010) A novel femtosecond-laser formation of CdS nanocrystallites in zirconia matrices. Journal of Nanoparticle Research, 12 (4). pp. 1459-1467. ISSN 1388-0764

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Abstract

A novel method for direct laser writing of two-dimensional cadmium sulfide (CdS) semiconductor nanoparticle microstructures is reported. A two photon or a higher-order multiphoton absorption process, originating from femtosecond laser pulses, was used to decompose CdS precursors dispersed in a zirconia thin film previously dip-coated on a glass substrate. The kinetics of nanoparticle formation as a function of laser power were monitored in situ by photoluminescence spectroscopy. Raman spectroscopy was also performed to characterize the structural changes of the zirconia matrix under irradiation and to verify the formation of CdS nanoparticles. Results show that CdS nanoparticles were formed by two-photon absorption (TPA) with or without the help of an additional carbazole photoinitiator.

Item Type:Article
Uncontrolled Keywords:OPTICAL-PROPERTIES; ELECTRONIC STATES; RAMAN-SPECTRA; GLASS MATRIX; THIN-FILMS; BAND-GAP; NANOPARTICLES; PULSES; SIZE; LUMINESCENCE
Subjects:Material Science > Nanostructured materials
ID Code:8880
Deposited By:CSMNT
Deposited On:07 Jul 2010 10:16
Last Modified:19 Aug 2010 08:52

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